diff --git a/src/mqtt_client_wrapper.cpp b/src/mqtt_client_wrapper.cpp
index b7db638..f0f14a9 100644
--- a/src/mqtt_client_wrapper.cpp
+++ b/src/mqtt_client_wrapper.cpp
@@ -3,6 +3,7 @@
 #include <thread>
 #include <chrono>
 #include <nlohmann/json.hpp>
+#include <algorithm>
 
 std::shared_ptr<MQTTClient> mqtt_client;
 std::atomic<bool> mqtt_restart_required{false};
@@ -33,7 +34,7 @@ static void send_heartbeat()
     mqtt_client->publish(g_app_config.mqtt.topics.heartbeat_up, msg.dump());
 }
 
-// MQTT 回调定义
+// MQTT 回调
 static void on_mqtt_connected()
 {
     LOG_INFO("[MQTT] Connected to broker: " + g_app_config.mqtt.server_ip);
@@ -220,10 +221,14 @@ void mqtt_client_thread_func()
             {
             }
 
-            // 更频繁地检查退出标志
+            // 拆分等待，及时响应退出
             for (int i = 0; i < 10 && g_running && !mqtt_client->isConnected(); i++)
+                std::this_thread::sleep_for(std::chrono::milliseconds(50));
+
+            if (!g_running && mqtt_client->isConnected() == false)
             {
-                std::this_thread::sleep_for(std::chrono::milliseconds(200));
+                mqtt_client->force_disconnect();
+                break;
             }
         }
 
@@ -233,33 +238,31 @@ void mqtt_client_thread_func()
             {
                 send_heartbeat();
             }
-            catch (const std::exception &e)
+            catch (...)
             {
-                LOG_ERROR("[MQTT] Heartbeat error: " + std::string(e.what()));
             }
-            // 将长睡眠拆分为多个短睡眠，以便更频繁检查退出标志
+
             auto sleep_time = heartbeat_interval;
             while (sleep_time.count() > 0 && g_running && mqtt_client->isConnected())
             {
-                auto chunk = std::min(sleep_time, std::chrono::milliseconds(200));
+                auto chunk = std::min(sleep_time, std::chrono::milliseconds(50));
                 std::this_thread::sleep_for(chunk);
                 sleep_time -= chunk;
             }
-        }
 
-        // 清理资源
-        if (mqtt_client)
-        {
-            // 只有在运行标志仍然为true时才尝试正常断开
-            if (g_running)
+            if (!g_running && mqtt_client->isConnected())
             {
-                mqtt_client->disconnect();
-            }
-            else
-            {
-                // 如果正在退出，直接重置客户端，不等待断开完成
                 mqtt_client->force_disconnect();
             }
+        }
+
+        // 清理客户端
+        if (mqtt_client)
+        {
+            if (g_running)
+                mqtt_client->disconnect();
+            else
+                mqtt_client->force_disconnect();
             mqtt_client.reset();
         }